# GPS Race Timer vs P2R Racing Calculators

GPS Race Timer and P2R Racing Calculators are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. GPS Race Timer sells 1 one-off in-app purchase and P2R Racing Calculators sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | GPS Race Timer | P2R Racing Calculators |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2.8K ratings)](https://appshunter.io/ios/app/gps-race-timer/id1340496243/reviews)** | — |
| Number of ratings | **2.8K** | — |
| Positive reviews | 34.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 7 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 50 MB | 62 MB |
| Requires iOS | **12.2** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Hagenau](https://appshunter.io/developer/1340496242) | [Slyon Studios LLC](https://appshunter.io/developer/502601246) |

## What reviewers say

### GPS Race Timer

[App page](https://appshunter.io/ios/app/gps-race-timer/id1340496243)

Accurately measure vehicle acceleration times like 0-60 mph and 1/4 mile using your iPhone's GPS. Set up timers beforehand and let the app automatically start measurements when speed targets are met or motion is detected. Save, export, and transfer your performance data easily.

**Highlights:** Measure 0-60 mph, 60-120 mph, 1/4 mile, Automatic start detection, Save and export results, Preset and adjustable timers, No extra hardware required, Optional PRO version features

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO | $4.99 | one-time |

**What reviewers like**

- 👍 Simple and easy to use
- 🚀 Accurate speed tracking
- 💡 Customizable settings
- 📊 Saves run data

**What reviewers complain about**

- 🐛 Inconsistent 0-60 and quarter mile times
- 🐛 Fails to start/record runs
- 🐛 Inaccurate distance tracking
- 🐛 Compatibility issues with newer devices

**Reported bugs**

- Timer doesn't reset properly
- App crashes on startup
- Significant GPS/speed detection delays
- Recorded times do not match actual performance

**Requested features**

- Add 60ft and 1/8 mile times
- Automatic start/stop of timer
- Manual start option for timer
- Improved accuracy and consistency


### P2R Racing Calculators

[App page](https://appshunter.io/ios/app/p2r-racing-calculators/id6450759131)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ENGINE CC CALCULATOR | $1.99 | one-time |
| OPTIMUM TIRE HEIGHT | $1.99 | one-time |
| 1/4 MILE RPM | $1.99 | one-time |
| GEAR RATIOS | $1.99 | one-time |


## Frequently asked questions

### Is GPS Race Timer free?

GPS Race Timer is free to download, with in-app purchases available.

### Is P2R Racing Calculators free?

P2R Racing Calculators is free to download, with in-app purchases available.

### Do GPS Race Timer or P2R Racing Calculators have ads?

Both GPS Race Timer and P2R Racing Calculators show ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*